mirror of
https://gitlab.com/lvra/lvra.gitlab.io.git
synced 2024-11-14 12:20:26 +01:00
46 lines
2 KiB
Markdown
46 lines
2 KiB
Markdown
---
|
|
weight: 50
|
|
title: Easy Anti-Cheat
|
|
---
|
|
|
|
# Easy Anti-Cheat
|
|
|
|
Sometimes, seemingly randomly, you can get an EAC error during the VRChat startup/login screen. It looks like a message box, with the title "Anti-cheat Error", no actual message text, and a single button labeled "Quit".
|
|
|
|
## Recommended Workaround
|
|
|
|
Wrapper script for starting VRChat: [startvrc.sh on GitHub](https://gist.github.com/galister/ca63a5795694e4c839a8e7f4bb8a35bc)
|
|
|
|
|
|
Set startup options for VRChat:
|
|
`/path/to/startvrc.sh %command%`
|
|
|
|
If you're using extra env vars, they should go first:
|
|
`PRESSURE_VESSEL_FILESYSTEMS_RW=/run/user/1000/monado_comp_ipc /path/to/startvrc.sh %command%`
|
|
|
|
|
|
## Root Cause
|
|
|
|
We are still trying to determine the cause.
|
|
|
|
It is likely caused by a race condition. Closing unnecessary apps or otherwise **lowering your CPU usage** before starting VRChat seems to make the EAC error happen significantly less often. It is safe to crank the CPU usage back up after the home world has loaded.
|
|
|
|
The following sections do not fix the issue, but are still kept on the wiki to dispel rumors and record research.
|
|
|
|
## (Outdated) glibc dt_gnu_hash
|
|
|
|
Previously, we believed it to be related to an incompatible glibc version. However, upon further testing, this turned out to be insufficient.
|
|
|
|
In other games with EAC, getting past the EAC splash screen had required glibc to be built with a specific flag to work.<sup>[1],[2]</sup> (`--hash-style=both`)
|
|
|
|
[1]: https://github.com/ValveSoftware/Proton/issues/6051
|
|
[2]: https://www.phoronix.com/news/Glibc-2.36-EAC-Problems
|
|
|
|
Flatpak Steam includes this flag, however Flatpak Steam is not recommended for VR.
|
|
|
|
As of 2024-02-09, Arch Linux no longer ships with this flag.
|
|
|
|
- Arch users could use this EAC-specific glibc from the AUR: https://aur.archlinux.org/packages/glibc-eac
|
|
- Gentoo users could enable the fix using the `hash-sysv-compat` USE flag on `sys-libs/glibc`.
|
|
|
|
To reiterate, this glibc flag does _not_ appear to fix VRChat's particular flavor of EAC failures.
|